Unveiling bast fiber production in Upper Paleolithic North China: Microfibers and usewear traces on stone tools from Shizitan
Fig 6
Microfibers uncovered from SZT lithic tools.
(a) Z-twist type in fibrillar orientation; (b) S-twist type in fibrillar orientation; (c) bast fiber showing visible Z-twist fibrillar orientation; (d) bast fiber bundle; (e) bast fiber showing prominent dislocations (indicated by arrows); (f) bast fiber showing less prominent dislocations (indicated by arrows) and cross markings; (g) damaged fiber showing twisted ribbon form, likely hemp; (h) long and entangled fiber; (i) very damaged UNID fibers (d, i, j showing both brightfield and polarized views).